Mark Zuckerberg, Lady Gaga and Adele have made it onto a list of top-achieving people under the age of 30.
On the photo: Pop singer Rihanna
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Katy Perry
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Facebook founder Mark Zuckerberg
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Mark Zuckerberg
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Lady Gaga
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British singer Adele
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Canadian singer Justin Bieber
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Gaga
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Ronan Farrow
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